Can someone ID this petcock please?

In the process of converting back to Amal carbs, I'm having to redo my fuel lines and petcocks. What I had were aftermarket and work great with the Mikuni, but I want to go back to the original style fuel lines and stock petcocks.

In my box of spare parts the PO left me are three petcocks. From the outside, they all look like the one pictured here, but this one is new and unused. When I took it apart, I found it to be a different design than the other two. Instead of a barrel inserted into a rubber sleeve, this one has no rubber parts. It's just a tapered brass plug. Can someone tell me if this is a better design? Or, should I find new rubber inserts for the other two and use them.

I suppose someone is going to tell me not to use either, but I'm committed to give them a try in an effort to keep the bike as stock as possible.

Also, where can I find the rubber inserts for the old ones?

Thanks~

Can't identify it, but here are my original 'EW' taps if it's any help. Notice mine have an 0-ring n them to keep them from leaking a little. I did reseat them by honing them with a drill and some valve compound. But I've been using the BAP ones for now.

that type with the brass taper are really good, no "O" rings to wear out.

Bonwit said:

In the process of converting back to Amal carbs, I'm having to redo my fuel lines and petcocks. What I had were aftermarket and work great with the Mikuni, but I want to go back to the original style fuel lines and stock petcocks.

In my box of spare parts the PO left me are three petcocks. From the outside, they all look like the one pictured here, but this one is new and unused. When I took it apart, I found it to be a different design than the other two. Instead of a barrel inserted into a rubber sleeve, this one has no rubber parts. It's just a tapered brass plug. Can someone tell me if this is a better design? Or, should I find new rubber inserts for the other two and use them.

I suppose someone is going to tell me not to use either, but I'm committed to give them a try in an effort to keep the bike as stock as possible.

Also, where can I find the rubber inserts for the old ones?

Thanks~

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As already stated, they're the best taps, they give a full uninterrupted flow, and have no rubber sleeves to become swelled / distorted / perished by ethanol.

You can even carefully drill out the brass type taps to slightly enlarge the diameter and increase the flow...